RAR utility

Hello,
I have downloaded the LINUX/ORACLE version for Solution Manager installation. I noticed after the download some folder end with .rar extension.
Do I need to extract it.
If it is then what is the method to extract the folder from RAR utility and EXE folder.
Please let me know.
Raj.
_._.__

Thanks for the quick response Leh. But this is in Linux operating system so how can I use Windows EXE utility? When I am installing do I have to bundle them together with 1by1 with DVD numbers then unzip it but I am still not sure about how to extract EXE or RAR files.
Installation guide mention unzip or extract the folder then copy locally before the start installing.
I have one more folder SAPINST with SAR extension. How to extract the SAR folder.
Please let me know.
Raj

Then you'll have to unpack the EXE/RAR DVDs on a windows system first, then
copy them to your linux system.
The SAR archives are extracted with command "SAPCAR -xvf <filename>", but I
don't think you should need to unpack any SAR archives for the installation.
All the DVDs come in ZIP or EXE/RAR format, if I remember correctly.